Hydrogen utilization as a fuel: hydrogen-blending effects in flame structure and NO emission behaviour of CH4–air flame

Park, Jeong; Hwang, Dong-Jin; Park, June Sung; Kim, Jeong Soo; Keel, Sang In; Cho, Han Chang; Noh, Dong Soon; Kim, Tae Kwon

doi:10.1002/er.1259

Cited by 16 publications

(7 citation statements)

References 15 publications

(27 reference statements)

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“…In the UK, domestic gas usage contributes to 9% of nationwide CO 2 emissions (2007)(2008)(2009) [37,104]. In an attempt to lower CO 2 and NO x emissions, the addition of hydrogen fuel can be an effective solution [106,107].…”

Section: Direct Combustion Of Hydrogenmentioning

confidence: 99%

Catalytic Hydrogen Combustion for Domestic and Safety Applications: A Critical Review of Catalyst Materials and Technologies

2021

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Spatial heating and cooking account for a significant fraction of global domestic energy consumption. It is therefore likely that hydrogen combustion will form part of a hydrogen-based energy economy. Catalytic hydrogen combustion (CHC) is considered a promising technology for this purpose. CHC is an exothermic reaction, with water as the only by-product. Compared to direct flame-based hydrogen combustion, CHC is relatively safe as it foregoes COx, CH4, and under certain conditions NOx formation. More so, the risk of blow-off (flame extinguished due to the high fuel flow speed required for H2 combustion) is adverted. CHC is, however, perplexed by the occurrence of hotspots, which are defined as areas where the localized surface temperature is higher than the average surface temperature over the catalyst surface. Hotspots may result in hydrogen’s autoignition and accelerated catalyst degradation. In this review, catalyst materials along with the hydrogen technologies investigated for CHC applications were discussed. We showed that although significant research has been dedicated to CHC, relatively limited commercial applications have been identified up to date. We further showed the effect of catalyst support selection on the performance and durability of CHC catalysts, as well as a holistic summary of existing catalysts used for various CHC applications and catalytic burners. Lastly, the relevance of CHC applications for safety purposes was demonstrated.

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Section: Direct Combustion Of Hydrogenmentioning

confidence: 99%

Catalytic Hydrogen Combustion for Domestic and Safety Applications: A Critical Review of Catalyst Materials and Technologies

2021

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“…However, the degradation problem in the PF algorithm significantly affects estimation accuracy. To solve this problem and improve the estimation accuracy, we adopt the genetic algorithm in the resampling of PF [37][38][39], which is called the genetic resampling particle filter (GPF). Previous works showed that the GPF performs better than the PF.…”

Section: Introductionmentioning

confidence: 99%

State-of-health estimation of lithium-ion battery packs in electric vehicles based on genetic resampling particle filter

Zhang

et al. 2016

Applied Energy

138

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Power battery packs are the energy source of battery electric vehicles (BEVs). A precise battery state of health (SOH) estimation is crucial to ensure the security and stability of the operation of BEVs. Hence, a battery pack model is established in this study. Given that a battery pack is a complex and nonlinear system, the proposed battery pack model is simplified to reduce computational complexity, which usually produces non-Gaussian noise. Considering that the genetic resampling particle filter (GPF) performs efficiently in solving nonlinear and non-Gaussian problems, we propose a new GPF-based method for battery SOH estimation. First, a second-order equivalent circuit model of Resistance-Capacitance (RC) circuit for the battery pack is developed. The unknown parameters are identified using the recursive least squares with forgetting factor. Second, a state-space model of the GPF is developed on the basis of the equivalent circuit model. Finally, we investigate the estimation performance of the proposed model by conducting a case study using the real data collected from operating electric taxis in Beijing. Estimation results show that the proposed GPF model outperforms the particle filter method in the SOH estimation problem.

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“…Hydrogen blending effects on flame structure and NO emission behavior have been numerically investigated by Park et al [11] using detailed chemistry in methane-air counterflow diffusion flames. A computational study to investigate the effects of hydrogen addition on methane-air flames at different conditions has been performed in the study of Chen [12].…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of the effects of hydrogen addition on methane combustion

İlbaş

Yılmaz

2011

Int. J. Energy Res.

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SUMMARY This paper presents gas emissions from turbulent chemical flow inside a model combustor, for different blending ratios of hydrogen–methane composite fuels. Gas emissions such as CO and O2 from the combustion reaction were obtained using a gas analyzer. NOx emissions were measured with a NOx analyzer. The previously obtained flame temperature distributions were also presented. As the amount of hydrogen in the mixture increases, more hydrogen is involved in the combustion reaction, and more heat is released, and the higher temperature levels are resulted. The results have shown that the combustion efficiency increases and CO emission decreases when the hydrogen content is increased in blending fuel. It is also shown that the hydrogen–methane blending fuels are efficiently used without any important modification in the natural gas burner. Copyright © 2011 John Wiley & Sons, Ltd.

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Hydrogen utilization as a fuel: hydrogen-blending effects in flame structure and NO emission behaviour of CH4–air flame

Cited by 16 publications

References 15 publications

Catalytic Hydrogen Combustion for Domestic and Safety Applications: A Critical Review of Catalyst Materials and Technologies

Catalytic Hydrogen Combustion for Domestic and Safety Applications: A Critical Review of Catalyst Materials and Technologies

State-of-health estimation of lithium-ion battery packs in electric vehicles based on genetic resampling particle filter

Experimental analysis of the effects of hydrogen addition on methane combustion

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